User creation or modification via /etc file

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BIOC Informational

Attackers may create new users or modify existing users by directly modifying /etc/passwd and /etc/shadow.

ATT&CK tactics: Persistence (TA0003)

ATT&CK techniques: Create Account (T1136)

Indicator:

File file path = /etc/shadow , /etc/passwd AND action type = write

Preventable: yes